Coating device for lithium battery production

Abstract

The utility model relates to the technical field of coating for lithium battery production, and discloses a coating device for lithium battery production, which is characterized in that a fixed rod is fixedly connected to the top in a placing frame, gears are rotatably connected to the inner side of the fixed rod close to the top and the bottom, a chain is in transmission connection with the outer ring of the gears, and a first traction roller is rotatably connected to the middle of the chain; tension springs are fixedly connected to the two ends of the chain, a second traction roller is fixedly connected to the left side of the top of the containing frame, and a coating mechanism is installed on the right side of the top of the containing frame and internally provided with a discharging assembly; according to the coating device for lithium battery production, before coating, through cooperation of a tension spring, a first traction roller can be adjusted up and down according to power of a first power roller and a second power roller so as to adjust the tension degree of a current collector, so that smooth coating of the current collector is guaranteed, and meanwhile, under the action of the gravity of an arranged scraping roller, the scraping roller is not prone to falling off. And the flatness of the current collector can be further ensured, so that the aim of uniform coating in the later period is fulfilled.

Description

Technical Field

[0001] This utility model relates to the field of coating technology for lithium battery production, specifically a coating device for lithium battery production. Background Technology

[0002] The purpose of coating in lithium battery production is to uniformly coat the active material onto the current collector to form an electrode coating of consistent thickness. This ensures stable battery performance and meets capacity standards, while also improving the conductivity and safety of the electrodes, laying the foundation for efficient charging and discharging and long-life operation of lithium batteries.

[0003] In most existing coating equipment, active materials are coated onto the current collector by a scraper during the coating process. However, the scraper can only coat active materials. When the current collector is uneven or there is too much active material on the scraper, uneven coating is likely to occur. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a coating apparatus for lithium battery production to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coating device for lithium battery production, comprising a placement frame, a placement roller fixedly connected to the right side of the placement frame, a fixing rod fixedly connected to the top of the placement frame, gears rotatably connected to the inner side of the fixing rod near the top and bottom, a chain drivingly connected to the outer ring of the gears, a first traction roller rotatably connected to the middle of the chain, tension springs fixedly connected to both ends of the chain, a second traction roller fixedly connected to the top left side of the placement frame, a coating mechanism installed on the top right side of the placement frame, and a discharge component installed inside the coating mechanism;

[0006] The coating mechanism includes a first power roller and a second power roller. The first power roller is fixedly connected to the right side of the second traction roller at the top of the placement frame. The second power roller is fixedly connected to the right side of the first power roller at the top of the placement frame. A fixing plate is fixedly connected to the right side of the second power roller at the top of the placement frame. A sliding block is slidably connected to the top of the second power roller on the inner side of the fixing plate. A leveling roller is rotatably connected to the middle of the inner side of the sliding block. A coating plate is fixedly connected to the inner side of the fixing plate near the second power roller.

[0007] Preferably, the placement roller is mounted on a separate fixed frame, a cylinder is fixedly connected to one side of the bottom of the fixed frame, and a placement frame is fixedly connected to the other end of the cylinder. Sliding rods are provided on the right side of the placement frame at both the top and bottom of the fixed frame, and the top and bottom of the fixed frame are slidably connected to the sliding rods on the placement frame.

[0008] Preferably, the first and second power rollers are equipped with power motors, the right side of the sliding block is provided with a sliding groove, and the left side of the fixed plate is provided with a slide rail corresponding to the sliding groove of the sliding block. The sliding block achieves sliding connection on the fixed plate through the cooperation of the sliding groove and the slide rail.

[0009] Preferably, the discharge assembly includes a discharge trough, which is fixedly connected to the top left side of the coating plate. A partition is fixedly connected to the right side of the discharge trough, and a uniform plate is fixedly connected to the middle of the partition. A second feed pipe is fixedly connected to the inside and top of the discharge trough. A first feed pipe is fixedly connected to the top of the second feed pipe, and a third feed pipe is fixedly connected to the middle of the first feed pipe. An outlet is opened on the bottom left side of the discharge trough.

[0010] Preferably, uniform plates are densely and fixedly connected at equal intervals in the middle of the partition, and a feed pipe is provided between each uniform plate.

[0011] Preferably, the second feed pipe extends into the discharge trough and to the bottom of the partition. The second feed pipe has notches at the top and bottom of the partition for discharging the coating material.

[0012] Compared with the prior art, the present invention provides a coating device for lithium battery production, which has the following advantages:

[0013] 1. The coating device for lithium battery production, through the coating mechanism, when the current collector is pulled by the placement roller to the position between the first traction roller and the second traction roller, the active material is coated onto the current collector by the coating plate. Before coating, the tension of the current collector is adjusted by the tension spring according to the power of the first and second power rollers, thereby ensuring a smooth coating of the current collector. At the same time, the leveling roller, under its own weight, can further ensure the smoothness of the current collector, thus achieving the purpose of uniform coating in the later stage.

[0014] 2. This coating device for lithium battery production, through its discharge assembly, connects an external active material tube and a third feed tube when the active material is coated onto the current collector by the coating plate. The active material is then transported evenly to the top and bottom of the partition in the discharge trough through the first and second feed tubes. At the same time, the uniform plate can also evenly fill the discharge trough with the active material, which is then evenly discharged through the outlet and distributed on the top of the coating plate. This solves the problem of uneven thickness caused by excessive active material on the existing coating plate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rear side of the overall structure of this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model at the middle.

[0019] Figure 4 This is a schematic diagram of one side of the discharge assembly;

[0020] Figure 5 This is a schematic diagram of the separation structure of the discharge component.

[0021] In the diagram: 1. Placement rack; 2. Coating mechanism; 21. Discharge assembly; 211. Discharge chute; 212. First feed pipe; 213. Baffle plate; 214. Second feed pipe; 215. Third feed pipe; 216. Outlet; 217. Uniform plate; 22. First power roller; 23. Second power roller; 24. Scraping roller; 25. Coating plate; 26. Sliding block; 27. Fixing plate; 3. Placement roller; 31. Cylinder; 4. Fixing rod; 5. Gear; 6. First traction roller; 7. Tension spring; 8. Chain; 9. Second traction roller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] This utility model provides the following technical solution: Example 1

[0025] Please see Figure 1-3 A coating device for lithium battery production includes a placement frame 1, a placement roller 3 fixedly connected to the right side of the placement frame 1, a fixing rod 4 fixedly connected to the top inside the placement frame 1, gears 5 rotatably connected to the inner side of the fixing rod 4 near the top and bottom, a chain 8 drivingly connected to the outer ring of the gears 5, a first traction roller 6 rotatably connected to the middle of the chain 8, tension springs 7 fixedly connected to both ends of the chain 8, a second traction roller 9 fixedly connected to the top left side of the placement frame 1, a coating mechanism 2 installed on the top right side of the placement frame 1, and a discharge component 21 installed inside the coating mechanism 2;

[0026] The coating mechanism 2 includes a first power roller 22 and a second power roller 23. The first power roller 22 is fixedly connected to the right side of the second traction roller 9 at the top of the placement frame 1. The second power roller 23 is fixedly connected to the right side of the first power roller 22 at the top of the placement frame 1. A fixing plate 27 is fixedly connected to the right side of the second power roller 23 at the top of the placement frame 1. A sliding block 26 is slidably connected to the inside of the fixing plate 27 at the top of the second power roller 23. A scraping roller 24 is rotatably connected to the middle of the inside of the sliding block 26. A coating plate 25 is fixedly connected to the inside of the fixing plate 27 near the second power roller 23.

[0027] With the coating mechanism 2 in place, when the current collector is pulled by the placement roller 3 to the first traction roller 6 and the second traction roller 9 and moved between the first power roller 22 and the second power roller 23, the active material is coated onto the current collector by the coating plate 25. Before coating, the first traction roller 6 can be adjusted up and down according to the power of the first power roller 22 and the second power roller 23 by the tension spring 7 to adjust the tension of the current collector, thereby ensuring a smooth coating of the current collector. At the same time, the scraping roller 24, under its own gravity, can further ensure the smoothness of the current collector, so as to achieve the purpose of uniform coating in the later stage.

[0028] The placement roller 3 is mounted on a separate fixed frame. A cylinder 31 is fixedly connected to one side of the bottom of the fixed frame, and a placement frame 1 is fixedly connected to the other end of the cylinder 31. Sliding rods are provided on the right side of the placement frame 1 at the top and bottom of the fixed frame of the placement roller 3. The top and bottom of the fixed frame are slidably connected to the sliding rods on the placement frame 1.

[0029] The first power roller 22 and the second power roller 23 are equipped with power motors. The right side of the sliding block 26 is provided with a sliding groove, and the left side of the fixed plate 27 is provided with a slide rail corresponding to the sliding groove of the sliding block 26. The sliding block 26 achieves sliding connection on the fixed plate 27 through the cooperation of the sliding groove and the slide rail. Example 2

[0030] Please see Figure 1-5 Furthermore, based on Embodiment 1, the discharge assembly 21 further includes a discharge trough 211, which is fixedly connected to the top left side of the coating plate 25. A partition 213 is fixedly connected to the right side of the discharge trough 211, and a uniform plate 217 is fixedly connected in the middle of the partition 213. A second feed pipe 214 is fixedly connected to the inside and top of the discharge trough 211. A first feed pipe 212 is fixedly connected to the top of the second feed pipe 214, and a third feed pipe 215 is fixedly connected in the middle of the first feed pipe 212. An outlet 216 is opened on the bottom left side of the discharge trough 211.

[0031] With the discharge assembly 21, when the active material is coated onto the current collector by the coating plate 25, the external active material tube and the third feed pipe 215 are connected. The active material is then transported through the first feed pipe 212 and the second feed pipe 214 to the top and bottom of the partition 213 in the discharge trough 211. At the same time, the uniform plate 217 can also uniformly fill the discharge trough 211 with the active material and then discharge it evenly through the outlet 216 to cover the top of the coating plate 25. This solves the problem of excessive active material on the existing coating plate 25, which leads to uneven thickness.

[0032] The partition 213 is densely and uniformly fixedly connected with uniform plates 217 at equal intervals, and each uniform plate 217 is provided with a feed pipe.

[0033] The second feed pipe 214 extends into the discharge trough 211 and reaches the bottom of the partition 213. The second feed pipe 214 has notches at the top and bottom of the partition 213 for discharging the coating material.

[0034] In actual operation, when this device is used, when the current collector is pulled by the placement roller 3 to the first traction roller 6 and the second traction roller 9 and moved between the first power roller 22 and the second power roller 23, the active material is coated onto the current collector by the coating plate 25. Before coating, the first traction roller 6 can be adjusted up and down according to the power of the first power roller 22 and the second power roller 23 by the tension spring 7 to adjust the tension of the current collector, thereby ensuring a smooth coating of the current collector. At the same time, the scraping roller 24, under its own weight, can further ensure the smoothness of the current collector, so as to achieve the purpose of uniform coating in the later stage.

[0035] When the coating plate 25 coats the active material onto the current collector, the external active material tube and the third feed pipe 215 are connected. The active material is then transported through the first feed pipe 212 and the second feed pipe 214 to the top and bottom of the partition 213 in the discharge trough 211. At the same time, the uniform plate 217 can also uniformly fill the discharge trough 211 with the active material and then discharge it evenly through the outlet 216 to cover the top of the coating plate 25. This solves the problem of excessive active material on the existing coating plate 25, which leads to uneven thickness.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A coating device for lithium battery production comprising a placing rack (1), characterized in that: The placing rack (1) right side fixedly connected with the placing roller (3), the placing rack (1) top fixedly connected with the fixed rod (4), the fixed rod (4) inside near the top and bottom are rotatably connected with the gear (5), the gear (5) outer circle transmission is connected with the chain (8), the chain (8) middle rotatably connected with the first traction roller (6), the chain (8) both ends are fixedly connected with the tension spring (7), the placing rack (1) top left side fixedly connected with the second traction roller (9), the placing rack (1) top right side is installed with the coating mechanism (2), the coating mechanism (2) is installed with the discharge assembly (21) in, The coating mechanism (2) includes first power roller (22) and second power roller (23), the first power roller (22) is fixedly connected to the second traction roller (9) right side of the placing rack (1) top, the placing rack (1) top is fixedly connected with the second power roller (23) right side of the first power roller (22), the placing rack (1) top is fixedly connected with the fixed plate (27) right side of the second power roller (23), the fixed plate (27) inside is slidably connected with the sliding block (26) top of the second power roller (23), the sliding block (26) inside middle rotatably connected with the scraping roller (24), the fixed plate (27) inside is fixedly connected with the coating plate (25) near the second power roller (23).

2. The coating device for lithium battery production according to claim 1, characterized in that: The placing roller (3) is arranged on a separate fixed frame, the fixed frame bottom one side is fixedly connected with the air cylinder (31), the air cylinder (31) other end is fixedly connected with the placing rack (1), the placing rack (1) right side is arranged with the sliding rod on the fixed frame top and bottom of the placing roller (3), and the fixed frame top and bottom are slidably connected with the sliding rod on the placing rack (1).

3. The coating device for lithium battery production according to claim 1, characterized in that: The first power roller (22) and the second power roller (23) are provided with a power motor, the sliding block (26) right side is provided with a sliding groove, the fixed plate (27) left side is provided with a sliding rail corresponding to the sliding groove of the sliding block (26), and the sliding block (26) is slidably connected on the fixed plate (27) through the cooperation of the sliding groove and the sliding rail.

4. The coating device for lithium battery production according to claim 1, characterized in that: The discharge assembly (21) includes a discharge chute (211), the discharge chute (211) is fixedly connected to the left side of the top of the coating plate (25), the discharge chute (211) is fixedly connected with the partition plate (213) inside right side, the partition plate (213) is fixedly connected with the uniform plate (217) in the middle, the discharge chute (211) is fixedly connected with the second feeding pipe (214) inside and top, the second feeding pipe (214) top end is fixedly connected with the first feeding pipe (212), the first feeding pipe (212) is fixedly connected with the third feeding pipe (215) in the middle, and the discharge chute (211) bottom left side is provided with an outlet (216).

5. The coating device for lithium battery production according to claim 4, characterized in that: The partition plate (213) is fixedly connected with the uniform plate (217) in the middle at equal intervals, and a feeding pipe is arranged between each uniform plate (217).

6. The coating device for lithium battery production according to claim 4, characterized in that: The second feeding pipe (214) extends to the bottom of the baffle (213), and is provided with a notch at the top and the bottom of the baffle (213) for discharging the coating material.

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